Feed-water heater.



No. 757,665. PATENTED APR. 19, 1904.

" J. E. LEWIS;

FEED WATER HEATER. APPLIUATIOR FILED 1120.29. 1902.

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* UNITED STATES Patented April 19, 1904.

PATENT QFFIQE. 1

LOCK COILIPIPE- COMPANY, or HARTFORD, coNNEor oU'r, A cos- I PORATION.

FEED-WATER HEATER.

SPECIFICATION forming art of Letters Patent No. 757,665, dated 'i n1931904. Application iiled D eceinber 29,1902 Serial No. 136,953.(roman) Todd; whor'rt it nt ay'eonce rfiid I Be it known that I, Josnrn. E. Lnwrs, a citizen of the United States, residing at Hartford,in'the-connty of Hartford and State of Connecticntfhav'e invented a newand useful Improvement in Feed -iVater Heaters, of which th gfollowingisa specification, accompanied by drawings-forming a part of the same,in

'Figure 1 represents a side elevation of a feedwater heaterembodying; myinvention. Fig. 2 is a transversmsectional view on line '22, Fig. 1,"Fig. 3 is side elevation with Jon e-halfrpresented in central sectionalView,

but with the iriclosedjvater-pipes shown in fulk and Fig.4 is a frontelevation of the upper header for the water-pipes with its cap or coverremoved.

Similar referencefletters and figiires refer to s milar parts in'thediflerent' views.

lVIy present invention relates to afeed-water heater for heating thewater supplied to steam-boilers andfor other purposes, and particularlyto that class of feed-water heaters which comprises a casing inclosing aheatingchamber to which steam is admitted and a seriesof water pipesinclosed in the chamber through which the water to be heated is passed,although th'e'object may be accomplished by filling the heating-chamberwith: water and passing steamthrough the pipes.

" The objects of my inventionareto increase the efficiencyof this classof heaters-to sime plify their construction, to facilitate repairing, tomake. the joints of the apparatusreadily accessible withoutdisconnecting any of the steam or .water pipes, and to provide meanswhereby a single heater is able to heat water for more than one purpose,and these objects are accomplished by means of tl1 CODSl3IUC- tion andarrangement of parts as hereinafter described, the novel features beingset forth in the annexed claims.

Referring to the accompanying drawings, A denotes a shell or casinginclosing a steamchamber B, having suitable provision for the admissionof steam thereto and. having openings C and D, Fig. 3, through which theends of the water-pipes project. Attached to the side of the heater arecast-iron headers E and F, inclosing chamberswith which the-waterpipescommunicate. Each of the headers represented in the drawings consists ofa shell containing two rectangularcompartments G being wound intospiralcoils of different diameters and arranged concentrically with onecoil within-another. The coiled water-pipes have their ends entering andattached to the vertical wall J 2 of the headers E and F next the casingof the heater, either by being eX- panded'therein, by soldering, or bysome other suitable and practiced method.

Referring to Figs. 2, 3, and 4 of the drawings, the water-pipescomprising one sht consists of pipes 1, 5, and'9, which are coiled intothe larger spiral K. The next or second set consists of the. pipes 2, 6,and 1.0, which are coiled into the next smaller coil K and inclosedwithin the coil K. The next or third set consistsofthe pipes 3, "Z, and11 which'are coiled into a still smallercoil K inclosed within the coilK, and the fourth'or last set consists of the pipes 4, 8, and'12, whichare coiled into the smallest coil,K inclosed Within the coil K The upperends the pipes 1, 4, 5, 8, 9, and;l2 communicate wrththe compartment Hin thenpper header E and the opposite ends of the pipes 1, 4, 5, 8, 9,and 12 connect with the compartment in theopposite end of the lowerheader F. Similarly, the upper ends of the pipes 2, 3', 6, 7, 10,and l1communicate with the compartment G in the upper header and their lowerends with a. similar compartment in the opposite end of the lower headerF. The vertical side wall ofthe headers opposite the wall J consists ofa removable plate or cap J In Fig. 4 the header E is represented withits cap removed, thereby exposing the ends of the Water-pipes which passthrough and are attached to the opposite wall J The ends of the headersare provided with circular flanges L, to which are attached collars L,provided with an internal screw-thread L to receive the screw-threadends of pipes, as represented in broken lines L Fig. 4, for the purposeof conveying the water to be heated into the compartments of the upperheader E and discharging it from the compartments of the lower header F.

The heater represented in the accompanying drawings embodies in a singleheater two separate and independent systems of watersupply, one throughthe pipes 1, 4, 5, 8, 9, and 12 and the other through the pipes 2, 3, 6,7, 10, and 11, enabling one system of pipes to supply hot Water for, onepurpose, such as feed-water to a boiler, and the other set of pipes tosupply water for another and different purpose-such as a wash-sink,dye-vat, or other purposeor the discharge-pipes from the header F maybeconnected together and the heated water discharged through a singleplpe. 1 I

My method of construction embodies several advantages over any heaternow in use, so far as I am aware. "I am able to secure an increasedheating-surface on the Water-pipes by means of the concentric spiralcoils, and each of the water-pipes has a straight section M between thecoiled'section and the header and a short bend N between the coiledsection and the straight section M, said bent section being curved in anopposite direction to the curvature of the coiled section. This methodof bending enables the end of the pipe to be easily brought intoregistration with its corresponding holein the wall J of the headerWithout changing the alinement of the straight section M. For instance,the projecting end of one of thewater-pipes can be adjusted verticallyby separating or compressing its coils and laterally by varying thequrvature of the pipe at its coiled section and at the bent section N.The employment of the neck J on the headers permits the ends of thewaterpipes to project beyond the outside of the .VSO

1. In a feed-Water heater, the combination with a heating-chamber, of aseries of pipes said pipes connecting a compartment in one end of'one ofsaid headers with the compartment in the opposite end of the otherheader, substantially as described.

2. In a feed-water heater, the combination with a shell or casinginclosing a heating- 5- chamber and having openings for the projectingends of pipes, a series of pipes inclosed in said chamber and havingtheir ends projecting through said openings, headers inclosing chamberscommunicating with said 7 pipes, a removable cap on said headersopposite the ends of said pipes, and openings in the ends of saidheaders, and screw-threaded collars attached to theends of said headersfor supply and discharge pipes, substantially as described.

3. The combination with a shell or casing, inclosing a heating-chamberand having openings in its sides, of a series of pipes inclosed in theheating-chamber and having their ends 30 projecting through saidopenings, headers outside said casing inclosing chambers and providedwith flanged necks between said chambers and said casing and attached tosaid casing around said openings, removable caps 5 headers outside saidcasing inclosing chambers communicating with said pipes, a removable capon the side of each rheader and opposite said pipes, and an opening inthe end of each header to receive discharge and supply pipes.

Dated this 23d day of December, 1902.

JOSEPH E. LEWIS.

Witnesses:

J. B. MURPHY, W. L. HOWARD.

